Kerala PSC Previous Years Question Paper & Answer
Page:13
Below are the scanned copy of Kerala Public Service Commission (KPSC) Question Paper with answer keys of Exam Name 'Electrician/ Lineman - KAMCO Ltd/ PWD' And exam conducted in the year 2021. And Question paper code was '015/2021'. Medium of question paper was in Malayalam or English . Booklet Alphacode was 'A'. Answer keys are given at the bottom, but we suggest you to try answering the questions yourself and compare the key along wih to check your performance. Because we would like you to do and practice by yourself.
88. All day efficiency of transformer is
Ay Output kWh in24 brs
^) Output kWh in 24 hrs + Loss in 24 hrs
Input kWh in24 brs
൪) Input kWh in 24 hrs + Loss in 24 hrs
௦ _ __ [மும் பிறகு
(©) Tnput kWh in 24 hrs — Losses in 24 hrs
0) Output kWh in 24 hrs
(0) تسم kWh in 24 hrs — Losses in 24 hrs
89. Efficiency of a transformer is usually
(A) 70-80% (B) 60-70%
(C) Above 90% (D) 50-80%
90. In a/an instrument the pointer will oscillate before coming to final deflected
position.
(ಹ) Over-damped )8( Under-damped
(6) Critical damped (D) Dead beat
91. 1൦ obtain more holes, a pure silicon crystal is doped with
(^) Arsenic 6)
(6) Phosphorous (D)
92. gas is filled in incandescent lamp.
(A) Argon (8)
(C) Mercury vapour (D)
93. Unit of luminous flux
(4) candela (B)
(C) candle power (D)
Antimony
Boron
015/2021
[P.T.O.]